Question

Answer the following question

a) What is Newton's universal law of gravitation.

b) Derive expression for it.

c) Write the formula of universal gravitational constant from above formula. ​

Answer 1

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$\underline\bold\blue{</p><p>Newton's \: Universal \: Law \: Of Gravitation :}$

Newton's universal law of gravitation states that every particle in the universe attracts every other particle with a force along a line joining them. The force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

$\small\mathbf\orange{{ Expression :}}$

In symbols, the magnitude of the attractive force F is equal to G (the gravitational constant, a number the size of which depends on the system of units used and which is a universal constant) multiplied by the product of the masses (m1 and m2) and divided by the square of the distance

R: F =

$\frac{g(m1m2) }{ {r}^{2} }$

Answer 2

a. Every object attracts every other object with a force which is directly proportional to the product of their masses and inversely proportional to the square of distance between them.

b. F=G* M*m/d2 ( G is the constant of proportionality)

c. G=6.673×10-¹¹